From d51783c15f7548229e49331d254a738be8ac865c Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Fri, 21 Aug 2015 15:47:42 +0530 Subject: ALSA: hdac: add extended device driver registration This adds new extended driver objects and API for registering the extended devices. Signed-off-by: Subhransu S. Prusty Signed-off-by: Vinod Koul Signed-off-by: Takashi Iwai --- sound/hda/ext/hdac_ext_bus.c | 66 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) (limited to 'sound/hda/ext/hdac_ext_bus.c') diff --git a/sound/hda/ext/hdac_ext_bus.c b/sound/hda/ext/hdac_ext_bus.c index 94fb9878f5cb..8544e4fb1cd3 100644 --- a/sound/hda/ext/hdac_ext_bus.c +++ b/sound/hda/ext/hdac_ext_bus.c @@ -196,3 +196,69 @@ void snd_hdac_ext_bus_device_remove(struct hdac_ext_bus *ebus) } } EXPORT_SYMBOL_GPL(snd_hdac_ext_bus_device_remove); +#define dev_to_hdac(dev) (container_of((dev), \ + struct hdac_device, dev)) + +static inline struct hdac_ext_driver *get_edrv(struct device *dev) +{ + struct hdac_driver *hdrv = drv_to_hdac_driver(dev->driver); + struct hdac_ext_driver *edrv = to_ehdac_driver(hdrv); + + return edrv; +} + +static inline struct hdac_ext_device *get_edev(struct device *dev) +{ + struct hdac_device *hdev = dev_to_hdac_dev(dev); + struct hdac_ext_device *edev = to_ehdac_device(hdev); + + return edev; +} + +static int hda_ext_drv_probe(struct device *dev) +{ + return (get_edrv(dev))->probe(get_edev(dev)); +} + +static int hdac_ext_drv_remove(struct device *dev) +{ + return (get_edrv(dev))->remove(get_edev(dev)); +} + +static void hdac_ext_drv_shutdown(struct device *dev) +{ + return (get_edrv(dev))->shutdown(get_edev(dev)); +} + +/** + * snd_hda_ext_driver_register - register a driver for ext hda devices + * + * @drv: ext hda driver structure + */ +int snd_hda_ext_driver_register(struct hdac_ext_driver *drv) +{ + drv->hdac.type = HDA_DEV_ASOC; + drv->hdac.driver.bus = &snd_hda_bus_type; + /* we use default match */ + + if (drv->probe) + drv->hdac.driver.probe = hda_ext_drv_probe; + if (drv->remove) + drv->hdac.driver.remove = hdac_ext_drv_remove; + if (drv->shutdown) + drv->hdac.driver.shutdown = hdac_ext_drv_shutdown; + + return driver_register(&drv->hdac.driver); +} +EXPORT_SYMBOL_GPL(snd_hda_ext_driver_register); + +/** + * snd_hda_ext_driver_unregister - unregister a driver for ext hda devices + * + * @drv: ext hda driver structure + */ +void snd_hda_ext_driver_unregister(struct hdac_ext_driver *drv) +{ + driver_unregister(&drv->hdac.driver); +} +EXPORT_SYMBOL_GPL(snd_hda_ext_driver_unregister); -- cgit